JPH11314117A - Press brake - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate defective products and to elevate working efficiency by deciding the installation positions of dies to each stage of the product accurately and in a short time and indicating the position of the die used for every stage. SOLUTION: This press brake consists of an input means 3 for inputting installation position information J of the dies P1, P2, P3, D1, D2, D3 to an upper table 1 or the lower table 2 and die position indicating means H1, H2,...H15 for indicating the positions of the dies P1, P2, P3, D1, D2, D3 used for every stages (1), (2), (3) based on the installation position information J which is inputted with the putting means 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press brake, and more particularly to a press brake provided with a die position indicating means.

[0002]

2. Description of the Related Art Conventionally, in press brakes,
There are cases where a product is bent in multiple steps by attaching several types of different molds to the same table and using each mold.

For example, when a product S shown in FIG. 5A is manufactured, a bending line A is formed by a mold a in a first step, and a bending line B is formed by a mold b in a second step. In the process, the bending line C is bent by the mold c (FIG. 5B).

For this reason, at the bending positions m1, m2, and m3 of the press brake shown in FIG. 5C, punches a, b, and c are provided on the upper table 20 and dies a ', b', and c are provided on the lower table 30. 'Respectively.

[0005] When the workpiece W is bent by a mold comprising the punches a, b, and c and the dies a ', b', and c ', the product S (FIG. 5A) is produced. be able to.

In this case, each step and the bending position m
1, m2, m3, that is, the relationship of the positions of the molds a, b, c
Bending cannot be performed accurately unless it is known in advance.

Therefore, conventionally, as shown in FIG. 5C, a worker writes a process in which the mold is used each time.

For example, in FIG. 5C, a paper tape or the like is used to indicate that the mold a is used in the first step, while the mold b is used in the second step. This indicates that the mold c is used in the third step.

[0009]

However, the above conventional technique (FIG. 5) has the following problems.

[0010] That is, conventionally, as described above, an operator wrote in each mold a process in which the mold is used.

[0011] Therefore, when an operator mistakenly recognizes a mold and a process in which the mold is used, the wrong process may be written on the mold.

For example, in FIG. 5C, a mold b is
Sometimes it is incorrectly written to indicate that it is the third step, even though it is originally used in the second step.

Conventionally, in connection with the above,
Each process and the mold installation positions m1, m2, m3
It took time to get used to the correspondence.

[0014] That is, the worker himself / herself can use the product S having a simple shape.
About each process, and the installation position m1 of the mold,
It is only a short time to learn the correspondence between m2 and m3.

However, for a product S having a more complicated shape, it is necessary to remember the correspondence between each process and the installation position of the mold.
Obviously, it is not easy and takes a long time.

Therefore, the processing time of the product S is extended, and the efficiency is extremely low.

Further, conventionally, there is a case where a defective product is produced by erroneous correspondence between each process and the installation position of the mold.

An object of the present invention is to determine the installation position of a die for each step of a product in a press brake accurately and in a short time, and to display the position of a die used for each step. It is to eliminate defective products and improve processing efficiency.

[0019]

In order to solve the above-mentioned problems, the present invention, as shown in FIG. 1, has an upper table 1 and a lower table 2, and has punches P1, P2 attached to the upper table 1. , P3, and a die composed of dies D1, D2, and D3 attached to the lower table 2, a press brake for bending a workpiece W is shown in FIG.
Input means 3, (B) for inputting the installation position information J of the dies P1, P2, P3, D1, D2, D3 to the upper table 1 or the lower table 2, and the installation position information J input by the input means 3; , P1, P2, P3, D1, D2, D3
H, H2,... H
A technical measure called press brake characterized by the fact that it consists of 15 parts is taken.

Therefore, according to the configuration of the present invention, when the installation position information J of the dies P1, P2, P3 with respect to, for example, the upper table 1, is input by the input means 3 (FIG. 1) such as a mouse, the installation position information is obtained. For example, the NC 4 determines based on J, and the positions of the dies P1, P2, P3 to be used for each process are displayed by the die position display means H3, H13, H8.

[0021] For this reason, the die installation position for each process of the product is determined accurately and in a short time, and the operator can be guided to the display of the die to be used for each process and can perform processing. Eliminating the use of different molds by mistake, eliminating defective products, and improving processing efficiency.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings according to embodiments. FIG. 1 is a diagram showing the configuration of the present invention, in which reference numeral 1 denotes an upper table, 2 denotes a lower table, 3 denotes input means, 4 denotes NC, 5
Is a storage means, 6 is a lighting circuit 7, and a display means.

In FIG. 1, the press brake has an upper table 1 and a lower table 2, and the upper table 1 has, for example, punches P1, P2 and P3,
Are mounted with dies D1, D2 and D3, for example.

As is well known, the press brake includes the punches P1, P2, P3 and the dies D1, D2.
2, the work W is bent by the cooperation of D3.

For example, in an ascending press brake, the lower table 2 is raised, and in a descending press brake, the upper table 1 is lowered, thereby forming the punches P1, P2, P3 and the dies D1, D2, D3. The work W is subjected to bending by the mold, and a predetermined product S
1 and S2 (FIG. 2) are processed.

The upper table 1 has mold position display means H
1, H2... H15 are installed.

The mold position indicating means H1, H2... H
15 is a mold P1, P used for each process.
2, P3, D1, D2, and D3 are displayed, and are formed by, for example, lamps.

For example, when the dies P2 and D2 are used, the lamp H13 is turned on (FIG. 1). Further, as shown in the figure, the lamps H12, H12,
H13 and H14 may be turned on.

The mold position indicating means H1, H2... H
Numeral 15 is provided at a bending position BP which is a distance from the machine center MC to the center of the mold.

For example, at the bending position BP = 0, the die position display means H8, at the bending position BP = + 100, the die position display means H13, and at the bending position BP = -100, the die position display means. Means H3 are provided respectively.

The input means 3 is, for example, a mouse, a keyboard or the like, and the dies P1, P2, P3, D1, D
2. The installation position information J for the upper table 1 or the lower table 2 of D3 is input.

The installation position information J includes, for example, the type of the die for each process and the installation position. When the input means 3 is a keyboard, these are entered by numerals, and when the input means 3 is a mouse, it is described later. The corresponding information can be selected on the screen of the display means 7 (for example, CRT).

The NC 4 controls the above-described mold position display means H1, H2,... H15 based on the installation position information J inputted from the input means 3, and turns on the corresponding ones (control signal). S4, S5). In addition, NC4
Is controlled as a whole.

The storage means 5 temporarily stores the installation position information J inputted from the input means 3 (signal S2).

The storage means 5 is formed of, for example, a ROM, and the NC 4 reads the installation position information J stored in the storage means 5 (signal S2), whereby the mold position display means H1, H2,. H15 is controlled.

Based on the control signal S4 from the NC 4, the lighting circuit 6 determines the corresponding mold position display means H1, H
2 ... H15 is lit by supplying power S5 to it.

The display means 7 is, for example, a CRT.
On the screen, various installation position information J is displayed as shown.

These pieces of information are input, for example, by selecting with the mouse as the input means 3.

On the screen, for example, steps,.
Installation positions m1, m2 ..., molds P1, P2 ...
, Bending lines B1B2,... Are displayed.

The step is a step in the case of bending a certain product, is the first step, is the second step,..., And the installation position is the position where the mold used in the step is installed. And the bending position BP, which is the distance from the machine center MC described above to the center of the mold.

The type of the mold used is
The bending line indicates the length of the bending line at the cut and raised portion of the product.

Among the installation position information J, the process, the mold, and the bending line can be automatically detected by the NC 4 based on the product information and the mold information stored in the storage means 5 in advance. .

Accordingly, the operator inputs at least the installation position of the mold for each process by operating, for example, a mouse.

FIG. 2 shows an example of the installation position information J displayed on the screen of the CRT 7.

FIG. 2A shows installation position information J1 when the product S1 is bent, and FIG. 2B shows the product S2.
Is the installation position information J2 when bending is performed.

The product S1 (FIG. 2A) has a cut-and-raised portion K1 of the bend line C, a cut-and-raised portion K2 of the bend line B, and a cut-and-raised portion K3 of the bend line A. In this case, the cut-and-raised portions K2 and K3 are formed at the edges of the hatched portion O1.

When bending the product S1, in the first step, the bending line C using the mold P1, in the second step, the bending line B using the mold P2, and in the third step. The bending line A is bent using the mold P3. These information are already stored in the storage unit 5 by the NC 4 as product information and mold information.

Therefore, in this case, the operator looks at the screen of the CRT 7 and sets, for example, the installation position -100 of the mold P1 in the first step, and the installation position +
100, and in the third step, the installation position 0 of the mold P3,
That is, the position of the mechanical center MC (FIG. 1) is input by selecting it with the mouse (signal S3).

Then, the input installation position information J1
Are stored in the storage means 5 and are used when the NC 4 controls the mold position display means H1, H2,.

Further, as described above, the worker not only has to install the mold used for each process, but also needs
As shown by the broken line in (A), all information on the process, the installation position, the mold, and the bending line may be input.

The product S2 (FIG. 2B) has a cut and raised portion K4 of the bending line D, a cut and raised portion K5 of the bending line E, and a cut and raised portion K6 of the bending line F. In this case, the cut-and-raised portions K5 and K6 are formed at the edges of the hatched hole O2.

In bending the product S2, in the first step, the bending line D is formed by using the mold P3, in the second step, the bending line E is formed by using the mold P1, and in the third step, the bending line E is formed. The bending line F is bent using the mold P2. The information is already stored in the storage unit 5 by the NC 4 as product information and mold information.

In this case, too, the operator inputs the die installation position for each process while looking at the screen of the CRT 7 as in FIG. 2A.

For example, in the first step, the installation position -120 of the mold P3 is input by selecting with the mouse (solid line in FIG. 2A).

Then, the input installation position information J2
Are stored in the storage means 5 and are used when the NC 4 controls the mold position display means H1, H2,.

However, the operator not only needs to install not only the positions of the dies used for the respective steps but also all the information of the steps, the positions of the dies, the dies and the bending lines, as in the case of FIG. (A broken line in FIG. 2B).

FIG. 3 is a diagram showing a specific operation screen according to the present invention. For example, the NC 4 (FIG. 1) already stores the shape of the product S3 and the dies P1, P2, and P3 used when bending the product S3 in the storage means 5 as product information and mold information, respectively. ing.

The mold P1 is used in the first step, the mold P2 is used in the second step, and the mold P3 is used in the third step.

Based on this assumption, the screen of FIG. 3 shows the shape of the product S3 and the dies P1, P2, P3 used.
Are displayed, and a scale 70 of the mold installation position based on the machine center MC is displayed.

Further, the display of the step 71 in the upper left of the screen is switched for each step, for example, 1/3 in the case of the first step, 2/3 in the case of the second step, and 2/3 in the case of the second step. In the case of three steps, 3/3 is displayed.

On such a screen, the operator uses the mouse as the input means 3 to, for example, use the mold P1 used in the first step.
Is selected by picking, and the die P1 is moved in the left-right direction while looking at the scale 70 in a state of being big, and the picking state is released when it reaches a predetermined position (for example, -100).

As a result, the position of the selected mold P1-1
00 is input to the NC 4 as the installation position information J3, and is displayed in the column of the mold position 72 on the screen.

In this way, the positions of the dies P2 and P3 used in the following second and third steps are sequentially input on the screen.

Hereinafter, the operation of the present invention having the above configuration will be described.
A description will be given based on FIG. In this case, the press brake bends the product S1 shown in FIG.
2A, the installation position information J1 of FIG. 2A is displayed.

First, in step 101 of FIG. 4, the mold installation position information J1 is inputted for each process.

That is, when the operator moves the cursor on the screen (FIG. 2A) using the mouse as the input means 3 and presses the button of the mouse when the cursor moves to a predetermined installation position, The selection signal S1 is input to the NC4, and the coordinate signal S3 corresponding to the selection signal S1 is input to the CRT.

Thus, in the first step, the installation position of the mold P1 is −100, in the second step, the installation position of the mold P2 is +100, and in the third step, the installation position of the mold P3 is 0.
Are respectively selected and stored in the storage means 5 via the NC 4 (signals S3 and S2).

As described above, the mold installation position information J1 is input for each process, and when the input is completed in step 102, the operation is started in step 103.

When the operation is started, at step 104, the mold position in the first step is displayed.

That is, the NC 4 reads from the storage means 5 the installation position -100 of the mold P1 used in the first process and the product information and the mold information on the product S1 which are input in the step 101 ( The signal S2 in FIG. 1),
The control signal S4 is transmitted to the lighting circuit 6.

The lighting circuit 6 having received the control signal S4 supplies the electric power S5 to the mold position display means H3 installed at the installation position -100.

As a result, the mold position display means H3 is turned on, and the operator is guided by the lighted mold position display means H3 and inserts the work W between the punches P1 and D1. The bending line C is bent (FIG. 2A) by the cooperation of the punches P1 and D1, and the cut-and-raised portion K1 is formed.

During this time, in step 105, it is determined whether or not the bending process has been completed for the first step.
If the bending is not completed (NO), Step 10
4, the mold position display means H3 is kept lit.

If the bending process has been completed for the first step (YES), the routine proceeds to step 106.

In step 106, the mold position in the second step is displayed.

That is, the NC 4 stores, from the storage means 5, the installation position of the mold P 2 used in the second step inputted in the step 101 +100 (FIG. 2A) and the product information on the product S 1. Read mold information (Fig. 1
Signal S2), and the control signal S4 is transmitted to the lighting circuit 6.

The lighting circuit 6 having received the control signal S4 supplies the electric power S5 to the mold position display means H13 installed at the installation position +100.

As a result, the mold position display means H13 is turned on, so that the worker is guided to the illuminated mold position display means H13, and the work W is placed between the punches P2 and D2.
Is inserted, the bending line B is bent (FIG. 2A) by the cooperation of the punches P2 and D2, and a cut-and-raised portion K2 is formed.

In the meantime, in step 107, it is determined whether or not the bending process has been completed for the second step.
If the bending is not completed (NO), Step 10
6, the mold position display means H13 is kept lit.

If the bending process has been completed for the second step (YES), the routine proceeds to step 108.

In step 108, the mold position in the third step is displayed.

That is, the NC 4 stores, from the storage means 5, the installation position 0 (FIG. 2A) of the mold P3 used in the third step inputted in the step 101, and the product S1.
Is read (signal S2 in FIG. 1), and a control signal S4 is transmitted to the lighting circuit 6.

The lighting circuit 6 having received the control signal S4 supplies the electric power S5 to the mold position display means H8 installed at the installation position 0.

As a result, the mold position display means H8 is turned on, and the operator is guided by the turned-on mold position display means H8 and inserts the work W between the punches P3 and D2. The bending line A is bent (FIG. 2A) by the cooperation of the punches P3 and D3, and the cut-and-raised portion K3 is formed.

In the meantime, in step 109, it is determined whether or not the bending process has been completed for the third step.
If the bending is not completed (NO), Step 10
8, the mold position display means H8 is kept lit.

When the bending process is completed for the third step (YES), all the operations are stopped (E
ND).

The illuminated mold position display means is not necessarily provided at the center of the molds P1, P2, P3.
For example, when using the mold P2 including not only the mold positions H3 and H8 but also the mold position display means on the left and right sides,
13, H12 and H14 can also be turned on (FIG. 1). This makes it easier for the operator to process, eliminates the adverse effect of accidentally using a different mold, and eliminates defective products.

In this embodiment, the case where the mold position display means H1, H2,..., H15 are installed on the upper table 1 has been described in detail, but the present invention is not limited to this. When the display means H1, H2,..., H15 are installed on the lower table 2, the same effect can be obtained.

[0089]

As described above, according to the present invention, the press brake is operated based on the input means for inputting the installation position information with respect to the upper table or the lower table of the mold, and the installation position information input by the input means. Thus, by comprising the mold position display means for displaying the position of the mold to be used for each process, when the installation position information of the mold with respect to the upper table, for example, is input by input means such as a mouse, For example, the NC determines based on the installation position information, and the mold position display means displays the position of the mold to be used for each process, so that the mold installation position for each process of the product can be accurately determined. In a short time, the operator can be guided to the display of the mold to be used for each process, and can perform machining. Goods is lost, becomes possible to achieve the technical effect of improving the working efficiency.

Further, since the length of the mold is substantially equal to the length of the bending line, the position of the mold to be used is displayed for each process. Then, there is also an effect that the operator does not mistake the bending order.

[0091]

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of the present invention.

FIG. 2 is a diagram showing an embodiment of installation position information according to the present invention.

FIG. 3 is a diagram showing a specific operation screen according to the present invention.

FIG. 4 is a flowchart illustrating the operation of the present invention.

FIG. 5 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 Reference Signs List 1 upper table 2 lower table 3 input means 4 NC 5 storage means 6 lighting circuit 7 display means

Claims (2)

[Claims] 1. A press brake which has an upper table and a lower table, and performs a bending process on a workpiece by a mold comprising a punch attached to the upper table and a die attached to the lower table. Input means for inputting installation position information for the upper table or the lower table, and mold position display means for displaying the position of a die to be used for each process based on the installation position information input by the input means. Press brake characterized by the following. 2. The press brake according to claim 1, wherein the mold position indicating means is provided on the upper table at a bending position which is a distance from a machine center to a center of the mold.